At the summit of a high mountain, the atmospheric pressure is 380 mm Hg. If the atmosphere is still composed of 21percent oxygen, then the partial pressure of oxygen at this altitude is about _____

A) 0 mm Hg
B) 80 mm Hg
C) 160 mm Hg
D) 380 mm Hg
E) 760 mm Hg


Answer: B

Biology & Microbiology

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